Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Wind Turbine Machine Models01:24

Wind Turbine Machine Models

In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Determination of Pi Terms01:15

Determination of Pi Terms

The Buckingham Pi theorem is a valuable method in dimensional analysis, reducing complex relationships between variables into dimensionless terms. Relevant variables in analyzing the lift force on an airplane wing include lift force, air density, wing area, aircraft velocity, and air viscosity. Expressing each variable in terms of fundamental dimensions — mass, length, and time — provides a consistent foundation for constructing these dimensionless terms.
The theorem indicates that the number...
Drag01:23

Drag

Drag is a resistive force opposing an object’s motion through a fluid, resulting from surface pressure and shear forces. It comprises two components: a perpendicular one from pressure and a tangential one from shear stress. Accurate drag calculations use pressure and wall shear stress distributions, often determined through Computational Fluid Dynamics (CFD) or wind tunnel testing. The drag coefficient, a dimensionless measure, depends on factors like shape, Reynolds number, Mach number, Froude...
Lift01:23

Lift

Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
Vectors in 2D: Problem Solving01:29

Vectors in 2D: Problem Solving

A plane traveling due north at 180 km/h in still air was found to be 80 km off-course after 30 minutes, deviating approximately 5 degrees east of north. This deviation means the influence of a crosswind alters the plane’s intended trajectory. The actual ground path formed a diagonal, suggesting that the aircraft’s effective ground speed was reduced to 160 km/h and directed slightly to the east due to the wind.By analyzing the displacement from the intended path, the velocity contributed by the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Complex cooperativity in DNA origami revealed via design-dependent defectivity.

Nucleic acids research·2026
Same author

Large Eddy Simulations of Model-Scale Turbulent Atmospheric Boundary Layer Flows.

Journal of engineering mechanics·2025
Same author

EQUIVALENT STATIC WIND LOADS VS. DATABASE-ASSISTED DESIGN OF TALL BUILDINGS: AN ASSESSMENT.

Engineering structures·2025
Same author

Prediction of Extreme Value Areal Parameters in Laser Powder Bed Fusion of Nickel Superalloy 625.

Surface topography : metrology and properties·2024
Same author

Traceable localization enables accurate integration of quantum emitters and photonic structures with high yield.

Optica quantum·2024
Same author

Linearity Characterization and Uncertainty Quantification of Spectroradiometers via Maximum Likelihood and the Non-parametric Bootstrap.

Metrologia·2024

Related Experiment Video

Updated: Jul 15, 2026

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
13:27

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

8.9K

Wind Load Factors for Use in the Wind Tunnel Procedure.

Emil Simiu1, Adam L Pintar2, Dat Duthinh3

  • 1NIST Fellow, Engineering Laboratory, National Institute of Standards and Technology, 226-8611, 100 Bureau Dr., Gaithersburg MD 20899.

ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems. Part A, Civil Engineering
|June 17, 2021
PubMed
Summary

This study provides guidance on wind load factors for building design, addressing limitations in the ASCE 7 Standard. It offers a method for calculating appropriate factors based on various uncertainties for risk-consistent designs.

Keywords:
Aerodynamicsload factorsmicrometeorologysafetystructural reliabilityuncertaintieswind climatologywind engineer

More Related Videos

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
10:29

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Published on: June 1, 2016

12.0K
Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

8.8K

Related Experiment Videos

Last Updated: Jul 15, 2026

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
13:27

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

8.9K
Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
10:29

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames

Published on: June 1, 2016

12.0K
Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

8.8K

Area of Science:

  • Structural Engineering
  • Wind Engineering
  • Aerodynamics

Background:

  • The ASCE 7 Standard lacks guidance on wind load factors for wind tunnel procedures.
  • Existing standards do not fully account for uncertainties in wind load determination.

Purpose of the Study:

  • To provide guidance on appropriate wind load factors for the ASCE 7 Standard's wind tunnel procedure.
  • To develop a method for calculating wind load factors considering various uncertainties.

Main Methods:

  • Classical definition of wind load factors based on uncertainties (micrometeorological, wind climatological, aerodynamics, structural dynamics).
  • Development of a straightforward approach for practitioners to determine appropriate wind load factors.
  • Collective accounting for uncertainties to achieve risk-consistent designs.

Main Results:

  • A simple approach for determining appropriate wind load factors is presented.
  • The proposed method allows for adjustments when uncertainties differ from those in the ASCE 7 Standard.
  • Load factors are generally similar to those in the ASCE 7 Standard, but increase significantly with shorter wind speed records.

Conclusions:

  • The presented approach enables risk-consistent building designs by collectively accounting for wind load uncertainties.
  • Practitioners can use this method to apply appropriate wind load factors, especially when dealing with limited wind speed data.
  • The study contributes essential guidance to the ASCE 7 Standard for wind engineering applications.